Waite, Mitchell, author
McGraw-Hill, 1982
Buku Teks
Krieger, Morris
McGraw-Hill, 1985
Buku Teks
Demille, Nelson
Warner Books, 1985
Buku Teks
Bandhu, Vishva, author
The V. V. Institute, 1956
Buku Referensi
Bauer, Laurie
Cambridge Cambridge University Press 1983
Buku Teks